315 research outputs found

    Upper Paleozoic Dikes of the Marão Mountain (Northern Portugal); results of intra orogenic Extension?

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    [Abstract] In the Marão mountain occur hercynian mafic veins cutting the Schistose Formation of the Landeilian age. The geochemistry of these rocks present high concentrations on Ti ,P, Zr, Nb, Ba, and REE (Ti O2= 1.23-1,39 %, P2O5= 1.32-1,60 %, Zr = 565-641 ppm, Nb= 33-46 ppm, Ba = 2531-3219 ppm, ΣREE = 295-430 ppm) and indicate significant REE fractionation (CeN/ Y bN= 10.46) similar to that reported for alkaline mafic rocks. These characteristics and their patterns in THOMPSON (1984) diagram are typical of alkaline rocks. The dikes intrusion occurred in a late stage of the tectonic evolution of the Centro-Iberian autochthon prior to the granitic magmatic phase. Their intrusion was facilitated, either by the reorientation of the stress field due to the emplacement of the NW Iberian nappe complex or local extensions common in transpressive regimes. This geodynamical context could produce the generation of alkaline magmatism due to partial melting of the upper mantle, induced by adiabatical decompression in the major crustal NW-SE shear zones

    Law, Liberty and the Rule of Law (in a Constitutional Democracy)

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    In the hunt for a better--and more substantial--awareness of the “law,” The author intends to analyze the different notions related to the “rule of law” and to criticize the conceptions that equate it either to the sum of “law” and “rule” or to the formal assertion that “law rules,” regardless of its relationship to certain principles, including both “negative” and “positive” liberties. Instead, he pretends to scrutinize the principles of the “rule of law,” in general, and in a “constitutional democracy,” in particular, to conclude that the tendency to reduce the “democratic principle” to the “majority rule” (or “majority principle”), i.e. to whatever pleases the majority, as part of the “positive liberty,” is contrary both to the “negative liberty” and to the “rule of law” itself

    A high-resolution versatile focused ion implantation platform for nanoscale engineering

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    The ability to spatially control and modify material properties on the nanoscale, including within nanoscale objects themselves, is a fundamental requirement for the development of advanced nanotechnologies. The development of a platform for nanoscale advanced materials engineering (P-NAME) designed to meet this demand is demonstrated. P-NAME delivers a high-resolution focused ion beam system with a coincident scanning electron microscope and secondary electron detection of single-ion implantation events. The isotopic mass-resolution capability of the P-NAME system for a wide range of ion species is demonstrated, offering access to the implantation of isotopes that are vital for nanomaterials engineering and nanofunctionalization. The performance of the isotopic mass selection is independently validated using secondary ion mass spectrometry (SIMS) for a number of species implanted into intrinsic silicon. The SIMS results are shown to be in good agreement with dynamic ion implantation simulations, demonstrating the validity of this simulation approach. The wider performance capabilities of P-NAME, including sub-10 nm ion beam imaging resolution and the ability to perform direct-write ion beam doping and nanoscale ion lithography, are also demonstrated

    The national inventory of geological heritage: methodological approach and results

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    A existência de um inventário nacional de património geológico é fundamental para se poderem implementar estratégias de geoconservação. Este trabalho apresenta a metodologia usada no desenvolvimento do mais completo inventário de geossítios, realizado até ao momento em Portugal, assim como os principais resultados obtidos. O inventário vai integrar o Sistema de Informação do Património Natural e o Cadastro Nacional dos Valores Naturais Classificados, ambos geridos pelo Instituto de Conservação da Natureza e da Biodiversidade.The existence of a national inventory of the geological heritage is of paramount importance for the implementation of a geoconservation strategy. This paper presents the methodological approach used to produce the most complete geosites inventory in Portugal, so far, and the obtained results. This inventory will be uploaded into the National Database of Natural Heritage managed by the Portuguese authority for nature conservation.Este trabalho é apoiado pela Fundação para a Ciência e a Tecnologia, através do financiamento plurianual do CGUP e do projecto de investigação “Identificação, caracterização e conservação do património geológico: uma estratégia de geoconservação para Portugal” (PTDC/CTE-GEX/64966/2006).info:eu-repo/semantics/publishedVersio

    Sympathy and Tenderness as Components of Dispositional Empathic Concern: Predicting Helping and Caring Behaviors

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    Recently, empathic concern was separated into the components of sympathy and tenderness (Lishner, Batson, & Huss, 2011). So far, these two emotional experiences have been assessed as episodic emotional responses, as the existent dispositional measures remain blind to such distinction. The aim of the present research is to develop and validate a dispositional measure that captures the personal disposition to feel sympathy, tenderness, and personal distress. This new scale is called Sympathy, Tenderness and Distress Dispositional Scale (SyTeD). In Study 1, we developed and tested the internal consistency and factor structure of the English version of the scale in the United States. In Study 2, we translated the scale into Spanish and tested its content and criterion validity in Spain. In Study 3, we tested the predictive validity of the sympathy-tenderness distinction within a helping vs. a care-based scenario in the United Kingdom (SyTeD-English version). In Study 4, we tested the predictive validity of the sympathy-tenderness distinction in a real helping situation in Spain (SyTeD-Spanish version). The results across these four studies suggest that the SyTeD is a useful measure of dispositional sympathy and tenderness that allows studying further different types of prosocial behavior (i.e., help vs. care)
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